san mateo congresswoman jackie spear co-sponsored the event and she wondered about some of the weapons turned in. >> high capacity magazines. this one is 100 rounds. there's no purpose for this kind of a magazine in a civilized society. >> more than $63,000 was paid out in yesterday's buy back. meanwhile, gun control activists marched in washington d.c. while gun buyers lined up to buy weapons they worry may soon be banned. here is abc news reporter chuck severson. >> thousands of gun control activists marched in the nation's capital, despite freezing temperatures. >> it's about connecting guns to what guns do. >> several residents from new town, connecticut joined the rally. a gunman killed his mother, then 20 first-graders and six teachers and himself in their town last month. >> living in this town and being here every day, you are bearing witness to change. any parent who has a gun in the house, they really, whatever it is, have to think about why they have that gun there. you know, it's time for people to maybe have to give up -- give up those guns. >> or try to keep guns out of t